Drilled well turbine pump



S 18,1934." i Hm ngmgm" DRILLED WELL TURBINE PUMP Filed Aug. 10, 1931 I#5 7: n Q5. v if I y W f lmi INVENTOR JAMES M. HAW

A+TORNEY Patented Sept. 18, 1934 DRILLED WELL TURBINE PUMP James M.Bait, Long Beach, Calif assignor to Food Machinery Corporation, acorporation of Delaware Application August 10, 1931, Serial No. 556,046

14 Claims.

This invention relates to drilled well turbine pumps, and provides animprovement in pumps of this nature, which improvement resides primarilyin increasing the pressure of the pump by unobvious changes in theinternal structure of the pump. The primary object of this invention isto provide a drilled well turbine pump having an impeller wherein thefluid accelerating path through the impeller is materially lengthenedwithout increasing the dimensions of the component parts of the pumpassembly. The actual effect is to increase the effective diameter of theimpeller, which results in increasing the hydraulic pressure developedby the impeller, which in turn renders the pump useful to lift againsthigher heads with an increased, gallonage.

The invention has been designed primarily in connection with pumps whichhave impellers provided with an upper and a-lower shroud; however, itwill be apparent that the principle involved in this invention is alsoapplicable to pumps having impellers with but a single shroud.

Briefly stated, the invention consists in extending the fluidaccelerating vane of the impeller beyond one or both of the shrouds ofthe impeller and into the fluid passages of the bowl in which theimpeller operates. Since it is well known that the fluid pressuredeveloped by impellers of this nature varies directly as the square ofthe efiective diameter of the fluid impelling vane,'it is apparent thata small extension of the vane results in a comparatively large increasein such fluid pressure. In practice, the vane may be extended beyond theinner diameter of the mating connection between adjacent bowls of thepump. The manner in which this is accomplished'will be more fullyexplained hereinafter. By extending the fluid controlling vane in themanner stated, the characteristics of the pump heretofore found mostdesirable in practice are maintained. Also, the efflciency of the pumpis improved, due to prolonged accelerating control of the fluid by theimpeller. In addition, it becomes apparent that by virtue of being ableto increase the efiective fluid controlling diameter of the impellerwithout increasing the dimensions of the other parts of the pump thatpumps heretofore designed for delivering a certain gallonage againstcertain heads with maximum efliciency may be used for deliv-' 'eringincreased heads against the-same gallonage with the same emciency. Thisobviously reduces the cost of production since it enables smaller pumpsto take the placeof larger ones.

.ri ng-shapedor annular opening which is defined It accordingly becomesafurther object of this invention to provide an improved impeller inpumps of the character described, which impeller is characterized byhaving the upper portion of the fluid accelerating vanes extendingbeyond the upper shroud of the impeller. As before stated,

in one of its aspects this invention embodies an impeller having vanesextending into the water passage of the bowl in whiclr it operates. Itis obvious that vanes of this nature will extend beyond the innercircumference of the mating connection between adjacent bowls, and ittherefore remains to provide means for assembling impellers and bowls ofthis type. For this purpose, I provide recesses between the bolt holesin the lower open end of each bowl, which are adapted to pass theextending vanes and permit them to be raised into position in the waterpassage of thebowl where they may rotate freely.

A further object of this invention is therefore to provide a combinationof a bowl and an impeller wherein the impeller has vanes extendingbeyond the shrouds and the bowl has recesses to pass said vanes intooperative position.

Other objects and advantages will become apparent as the descriptionproceeds in conjunction with the drawing, in which- Fig.4 is anelevation of a fragment of a pump assembly, partly in section; showingone form of my invention; I Fig. 2 is an inverted plan view on line 2-2of Fig. 1; and

Fig. 3 is a view, similar to Fig. 1, showing another form which myinvention may take.

Referring to Fig. 1 ofv the drawing, 1 have shown a part of a pumpassembly comprising bowls A and A, suitably connected. Since the bowlsare capable of being multiplied to fit existing requirements of pumpingconditions, and since each bowl would be identical, a description of onebowl only will be entered. The bowl A is provided with an'annular waterpassage 11 which extends through the bowl from bottom to top and is tobe considered as originating in a by alower edge 13a. on a hub member 13and an inner edge 13b within the bowl. The position of this annularopening, which is the mouth through which the fluid'projected from theimpeller enters between smooth walls defining the fluid passage 11through the bowl is indicated by the dotted lines 11a in Figs. 1 and 3.Within said water passage is provided a plurality of intermediate vanes12 which not only serve to gradually check whirling of the water column,11g

but also to support the hub 13 which forms an intermediate bearing for ashaft 1% which'is driven from the surface in any conventional manner.Mounted upon the shaft 14 is the usual impeller B, which is arranged tobe rotated by the shaft by means of a key 15. l

The impeller comprises what will be termed an upper shroud 15, a lowershroud 1?,"and a fluid impelling vane 18. Between the upper and thelower shrouds l6 and l? and outwardly between the vane 18 a waterpassage 19 is formed.

The bowl A is connected to the bowl A by means of a plurality of bolts20 which are synr metrically spaced around the circerence of a flange21, and are adapted to screw-threadedly engage holes 20' in the lowerend of the bowl A. In practice, it is customary to turn down the outersurface of the flange 21 on the bowl A, as shown at 22. This forms aseating surface for engaging the two bowls and, at the same time,produces a mating shoulder 23 on the bowl A, which serves to accuratelylocate the bowl A with respect to the axis or the shaft 14 by means of acomplementary mating shoulder 24 on the inner diameter oi the lower openendoi the bowl A. it is recod that such matlm shoulders are necessarysince the shaft it is continuous and.

lit is recognized.

is iournaled in each bowl. that the shoulder 23 must be of less dieterthan the bolts ZQinorder. to leave sumcient material for the bolts 20and the bolt holes 2o. This ,ordinarily precludes any possibility ofexten the vanes it beyond the lower shroud 1'? since the lower shroud 17is arranged to form a rotating clearance free from the shoulder 2d ofthe bowl A.

As shown in Fig. l, the vane 18 is extended be yond the shrouds 16 and17 and actually exerts a fluid-controlling influence in the lower partof the water passage 11. In order to permit this, it is necessary todispose the lower edge of the intermediate vane 12 as shown at 25. Thisresults in a benefit since the lower edge of the vane is removed fromthe high velocity zone of the pumped fluid. It is also necessary toprovide means for assembling the impeller into an operative positionthrough the lower open end of the bowl'A. Since the outer edge 26 of thevane 18 extends beyond the circerence of the shoulder 24, it isnecessary to provide means for passing the vanes through the shoulder.For this purpose, I form recesses 29 between the bolt holes 20', asshown m Fig. 2, which permit the extending portions 26 of the vanes 18to pass upwardly into an operative position in the bowl as shown in Fig.l. The recesses may be of any shape or size (preferably small) and aremerely for the purpose oif'passing the extended portions oi the vanesfor purposes of assembling, and will not in any way interiere with theoperation or the en ciency oi the pump.- In this manner the parts of thepump may be assembled and it is apparent that by extending the vane 18outwardly, as shown at 26, the fluid ccntrolling influence of the vaneis materially increased.

In Fig. 3 I have illustrated another form which my invention is take,which is somewhat simpier in construction. in this embodiment, the samenumerals be used to designate similar parts, but will be primed todenote the different construction.

In this form, the outer edge or the vane 18 extends beyond the uppershroud it, and is limited in its extension by the eter or the matingshoulder 34' through which it must pass in being assembled. This type oiimpeller does not necessitate recesses in the shoulder zt' since theouter edge 27 of the vane 18' is adapted to pass within thecircumference of the shoulder 2e. However, it is apparent that thefluid-controlling influence oi the vane 13' is materially increasedsince it is extended beyond the upper shroud and into the fluid passage12 of the bowl A. In con ventional construction, the vane 18 wouldtermi= note at the dotted line 28, whereas in my improved to, theterminating edge extends beyond this line and operates at a largerdiameter. Itis thus evident that the increased efiective diameter of theimpeller will operate to produce an increased hydraulic pressure andthat this increase may be obtained without increasing any of theexternal dimensions or the pump units.

Although I have shown my invention as end bodied in two forms,nevertheless I am aware that it may take other forms and that the prin--ciple of extending the fluid-controlling influence of the impeller inaccordance with my irnrentionv may be adapted to other types ofimpeller, and

'1 therefore intend this, disclosure to include a l such modificationsand adaptations of my invention as come within the scope ofthedisclosure and the purview of the appended claims.

I claim as my invention:

1. For use in a pump of the character described the combination of: abowl having a. lower open end adapted to be connected to an adjacentbowl; an impeller adapted to be rotatably mounted in said bowl throughsaid open end, said impeller having fluid-impeding vanes of greaterdiameter than the inner diameter of said open end and said bowl havingrecesses in the inner wall or said open end adapted to pass saidextend'ng vanes into operative position.

2. For use in a pump or the character described the combination of: abowl having a lower open end and a fluid passage extending through sa dbowl and communicating with said open end; an impeller adapted to berotatably mounted in said bowl through said open end, said impellerhaving fluid-irnpelling vanes arranged to extend into said fluid passagebeyond the inner circumference of said open end, the lower end of saidbowl having passages therethrough for passing said extending vanesthrough the lower open end of said bowl into operative position.

3. For use in a pump of the character described the combination oi: abowl having an annular fluid passage bounded by fixed substantiallyconcentric walls extending therethrough; a shrouded impeller rotatablymounted in said bowl, said impeller having fiuid-impelling vanesextending radially outward beyond the shrouds of the inipeller into saidfluid passage.

4. A pump unit embodying: a bowl having walls defining a circular fluidpassage therein; and an impeller rotatably mounted in sad bowl, saidimpeller comprising an upper shroud, a lower shroud of greater diameterthan said upper shroud, and

fluid-tunnelling vanes positioned between said shrouds, the outeredgesoi said vanes being oi equal diameter with said lower shroud, andhaving their upper comers extending into said fluid passage.

5. in a pump of the, character described the combination of: a pluralityof bowls having circular mating members for forming a connectiontherebetween; an impeller rotatably mounted in each bowl, said impellerhaving iiuid-impelling vanes of greater diameter than said mating Nillilo

zit

members; and said bowls having radial recesses arranged in a,circumferential series in one of said mating members and adapted to passsaid vanes.

6. A pump unit embodying the combination of: a bowl; a fixed hub memberin said bowl, said hub member being spaced from the wall or said bowl soas to form an annular fluid passage along the wall of said bowl, saidfluid passage having an annular opening defined by vertically spacededges in the bottom of said bowl; an impeller including a shroud in saidbowl; and vanes formed on said impeller with their outer ends extendingradially through said opening beyond said impeller shroud into saidfluid passage.

7. A pump unit embodying the combination of a bowl; a fixed hub memberin said bowl, said hub member being spaced from the wall of said bowl soas to form an annular fluid passage along the wall of said bowl, saidfluid passage having an annular opening in the bottom of said bowl, ashaft rotatably mounted in said hub member; and an impeller mounted onsaid shaft below said hub member, said impeller comprising a lowershroud, an upper shroud of a diameter not greater than the smallestdiameter of said annular opening; and vanes mounted between said shroudswith their outer end portions extending through said annular openingoutwardly beyond the shrouds into said fluid passage.

8. A pump unit embodying the combination of a bowl having in itsperiphery an annular fluid passage bounded by two fixed walls, saidpassage having an annular opening defined by two vertically spaced edgesin the bottom portion of said bowl; an impeller rotatably mounted in thebottom portion of said bowl; vanes on said impeller, said vanes havingthe upper corners of their outer ends extending radially through saidannular opening into said fluid passage; and vanes in said annular fluidpassage having their lower edges terminating above the upper edges ofsaid impeller vanes.

9. A pump unit embodying the combination of a bowl having in itsperiphery an annular fluid passage which communicates with the bottom ofsaid bowl through an annular opening defined by two coaxial, verticallyspaced edges, the lower edge defining a circle of greater diameter thanthe upper edge; and an impeller rotatably mounted in the bottom or" saidbowl, said impeller comprising a lower shroud having its peripheryadjacent the lower edge of said annular opening, an upper shroud havingits periphery adjacent the upper edge of said annular opening, andvanesbetween said shrouds with their outer ends extending radially throughsaid annular opening into said fluid passage.

10. A pump unit embodying the combination of: a bowl having in itsperiphery an annular fluid passage which communicates with the bottom ofsaid bowl through an annular opening defined by two coaxial verticallyspaced edges, the lower edge circle of greater diameter than the and animpeller rotatably mounted in of said bowl, said impeller comprisingperiphery adjacent the opening, an upper defining a upper edge; thebottom a lower shroud having its lower edge of said annular shroudhaving its periphery adjacent the upper edge of said annular opening;and vanes between said shrouds, said vanes having outer edges whichextend substantially vertically from the periphery of said lower shroudand upper edges which extend radially from said upper shroud throughsaid annular opening into said fluid passage.

11. A pump unit embodying a bowl member having walls forming a circularfluid passage therein extending inwardly at its lower end where itterminates in a ringhaped opening defined by vertically spaced edges, ashaft, an impeller on said shaft extending into the lower end of thebowl member and having a circular fluid passage therein said impellerpassage having an opening corre sponding with and positioned oppositethe opening of the passage in the bowl member, and vanes mounted in theimpeller passage and extending radially through said first mentionedopening into the fluid passage in the bowl member.

12. A pump unit embodying a bowl member hav-- ing walls forming acircular fluid passage therein, a shaft, an impeller on said shaftextending into the lower end of the bowl member and having a circularfluid passage therein having a corresponding opening with the opening ofthe passage in the bowl member, and vanes on the impeller extending intothe fluid passage in the bowl memher, the outer walls of the inwardlyextending portion of the fluid passage being formed with re cesses toreceive the impeller blades during assembly of the unit.

13. A pump unit embodying: abowl having in its periphery an annularfluid passage which communicates with the bottom of said bowl through anannular opening defined by two coaxial vertically spaced edges, thelower cdge defining a circle of greater diameter than the upper edge; ashrouded impeller rotatably mounted in the bottom of said bowl; andvanes on said impeller with their outer ends extending radially beyondthe shrouds of the impeller through said annular opening into said fluidpassage.

14. A pump unit comprising a pump bowl having spaced walls forming anannular fluid passageway therethrough terminating at its lower end in anannular opening, an impeller rotatably mounted in said bowl andincluding upper and lower shrouds spaced to provide a fluid passagewayhav-,

ing an annular discharge opening in registration with the annularopening in said bowl, and fluid impelling vanes positioned between saidshrouds and projecting outwardly of said impeller discharge openingbeyond the outer periphery of the upper shroud into the passageway ofthe bowl.

JAMES M. HAIT.

